What is electromagnetic induction: Learn what is electromagnetic

Learn what is electromagnetic induction, the phenomenon of generating emf from changing magnetic field. Explore Faraday's laws, Lenz's law, self and mutual inductance, and examples of electric generators and transformers. In this chapter, we will study the phenomena associated with changing magnetic fields and understand the underlying principles. The phenomenon in which electric current is generated by varying magnetic fields is appropriately called electromagnetic induction. Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another. Alternating electric current flows through the solenoid on the left, producing a changing magnetic field. This field causes, by electromagnetic induction, an electric current to flow in the wire loop on the right.